This collection consists of six papers, each dealing with some aspects of reliability and performance testing. Each paper has an abstract, and each contains its own references. Papers include: (1) "Using Reliabilities To Make Decisions" (Deborah J. Harris); (2) "Conditional Standard Errors, Reliability, and Decision Consistency Performance Levels Using Polytomous IRT" (item response theory) (Tianyou Wang, Michael J. Kolen, and Deborah J. Harris); (3) "Assessing the Reliability of Performance Level Scores Using Bootstrapping" (Dean A. Colton, Xiaohong Gao, and Michael J. Kolen); (4) "Evaluating Measurement Precision of Performance Assessment with Multiple Forms, Raters, and Tasks" (Xiaohong Gao and Dean A. Colton); (5) "Weights that Maximize Reliability under a Congeneric Model for Performance Assessment" (Tianyou Wang); and (6) "Reliability Issues and Possible Solutions" (Catherine J. Welch and Dara Martinovich-Barhite). (SLD)